£2500 it doesnt stop there mate then you have £180 a year for corgi membership, then after 5 years you have to do it all again !!! also public liability about 1k, unvented, offtec for oil the list goes on, i have been plumbing for 20 years and in that time the money i have to pay out each year before i can evern start to earn it back is loads and it gets worse each year,thats why the hourly rate for a fully quallified plumber/ heating enginer is what it is.